Ultra-low-frequency high-voltage generator[English abbreviation]:Ultra-low-frequency high-voltage generator Currently, both domestic and international methods use mechanical modulation and demodulation to generate ultra-low-frequency signals, resulting in non-standard sine wave waveforms, large measurement errors, spark discharge in the high-voltage section, bulky equipment, and the need for high-power high-voltage resistors to shape the second and fourth quadrants of the sine wave, leading to high overall power consumption. Years of theoretical and practical experience at home and abroad have proven that using 0.1Hz ultra-low-frequency withstand voltage testing instead of power frequency withstand voltage testing not only provides equivalent effectiveness but also significantly reduces the size and weight of the equipment. Theoretically, the capacity is about one five-hundredth of that of power frequency, and it is simpler to operate, offering more advantages compared to power frequency testing. This is why developed countries widely adopt this method.
After more than ten years of continuous research and development, the production technology of ultra-low-frequency high-voltage generators has become more lightweight and intelligent; it has been upgraded from the previous series output with a maximum voltage of 80kV to a single-stage direct output of 0-90kV.
Ultra-low-frequency high-voltage generator: ultra-low-frequency withstand voltage tester, ultra-low-frequency cable withstand voltage tester, ultra-low-frequency generator withstand voltage tester, ultra-low-frequency motor withstand voltage tester, programmable ultra-low-frequency high-voltage generator, ultra-low-frequency AC withstand voltage tester.
Combining modern digital frequency conversion advanced technology, it adopts microcomputer control, automatic voltage boosting, voltage reduction, and discharge, using photoelectric control to output 0.1Hz sine wave, and manual intervention is possible during the automatic voltage boosting process. Due to full electronization, it is small in size and light in weight, with a large-screen liquid crystal display that is clear and intuitive, and can display the output waveform with print output. The design indicators fully comply with the power industry standard "General Technical Conditions for Special Testing Instruments for Power Equipment, Part 4: General Technical Conditions for Ultra-low-frequency High-voltage Generators", and it is very convenient to use. Currently, both domestic and international methods use mechanical modulation and demodulation to generate ultra-low-frequency signals, resulting in non-standard sine wave waveforms, large measurement errors, spark discharge in the high-voltage section, bulky equipment, and the need for high-power high-voltage resistors to shape the second and fourth quadrants of the sine wave, leading to high overall power consumption. This product can overcome these shortcomings. In addition, the protection functions are designed as follows:
Overvoltage protection: When the voltage exceeds the set test voltage value by ten percent (or 1.1 times), the instrument will stop for protection, with an action time of less than 20 milliseconds.
Overcurrent protection: Designed with dual protection for high and low voltage. The high-voltage side can perform precise shutdown protection according to the set value; the low-voltage side will shut down for protection when the current exceeds the rated current, with action times both less than 20 milliseconds.
